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Friction compensation control device and method for electric power steering system

An electric power steering and friction compensation technology, which is applied to automatic steering control components, power steering mechanisms, steering mechanisms, etc., can solve the problems of damping control performance degradation and hands-off stability degradation, and achieve the effect of improving damping control performance

Active Publication Date: 2018-01-23
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the mid-to-high speed range, the friction compensation torque and the damping control torque overlap, so there is a problem that the damping control performance is degraded, and the vehicle's on-center steering feel, vehicle restoring force, and torque enhancement (build- up) and drop in hand free stability

Method used

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  • Friction compensation control device and method for electric power steering system
  • Friction compensation control device and method for electric power steering system
  • Friction compensation control device and method for electric power steering system

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Embodiment Construction

[0034] A friction compensation control device and method for an electric power steering (MOTOR DRIVENPOWER STEERING; MDPS) system according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In this process, the thickness of the lines shown in the drawings or the size of the constituent elements are exaggerated for clarity and convenience of description. In addition, the following terms are defined according to the functions in the present invention, and may vary depending on the purpose or practice of different users and operators. Therefore, these defined terms shall be subject to the content of the entire specification.

[0035] figure 1 It is a block diagram of the MDPS system of the vehicle according to an embodiment of the present invention, figure 2 It is a block diagram of the friction compensation control module of the friction compensation control device of the MDPS system according to an embodi...

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Abstract

A friction compensation control apparatus of a motor driven power steering (MDPS) system may include: a damping control unit configured to detect a damping torque of the MDPS system; and a friction compensation control module configured to detect a friction compensation torque using a column torque, a motor speed, and a vehicle speed, and adjust the detected friction compensation torque according to the magnitude of the damping torque.

Description

technical field [0001] The present invention relates to a friction compensation control device and method for an electric power steering (MOTOR DRIVEN POWER STEERING; MDPS) system, in particular to an MDPS that adjusts friction compensation torque according to the damping torque in a medium-high speed area, thereby improving damping control performance System friction compensation control device and method. Background technique [0002] Electric power steering (MOTOR DRIVEN POWER STEERING; hereinafter referred to as 'MDPS') system controls the motor to provide a light and comfortable steering operation feeling when the vehicle is running at low speed, and controls the motor to provide a heavy and stable steering operation feeling when the vehicle is running at high speed. And when running into an emergency, driving the motor makes it possible to turn quickly, providing the best steering operation environment for the driver as above. [0003] When the aforementioned electric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D6/00B62D119/00B62D101/00
CPCB62D5/0463B62D5/0466
Inventor 具恩敬
Owner HYUNDAI MOBIS CO LTD